WEBVTT FILE 1 00:00:00.100 --> 00:00:04.180 2 00:00:04.180 --> 00:00:08.260 3 00:00:08.260 --> 00:00:12.350 On Oct. 29, 2018, a massive iceberg broke away from Pine Island Glacier in Antarctica. 4 00:00:12.350 --> 00:00:16.480 Operation IceBridge flew over the new iceberg, B-46, on Nov. 7, 2018. 5 00:00:16.480 --> 00:00:20.660 6 00:00:20.660 --> 00:00:24.850 7 00:00:24.850 --> 00:00:29.030 8 00:00:29.030 --> 00:00:33.210 Pine Island Glacier is one of the fastest-melting glaciers in Antarctica. 9 00:00:33.210 --> 00:00:37.300 Crevasses criss-cross the glacier as ice flows to the sea. 10 00:00:37.300 --> 00:00:41.420 11 00:00:41.420 --> 00:00:45.550 12 00:00:45.550 --> 00:00:46.880